Symmetrical dual-band uni-planar antenna and wireless network device having the same

Abstract

The present invention discloses an antenna adapted for use in a wireless network device. The antenna includes a base and two antenna portions. Each antenna portion includes a ground section, a radiation portion and a signal section. The ground sections of the two antenna portions are connected with the same base. The radiation portion is connected with the ground section. The radiation portion has a first radiation section and a second radiation section wherein an external arm of the first radiation section is extending beyond and along the outer edge of the second radiation section and is separate from the second radiation section at a distance. The signal section is connected with the radiation portion in the manner that the first radiation section and the second radiation section are respectively positioned at two opposite side and a free end of the signal section is separate from the base. The antenna is a single component integrally formed by stamping an electrically conductive thin metal plate, which not only facilitates fabrication thereof, but also the assembly of the antenna to a substrate of the wireless network device, thereby increasing the gain of the wireless network device along a vertical direction.

Description

BACKGROUND OF INVENTION[0001]1. Field of the Invention[0002]The present invention relates to antennas, and more particularly, to an integrally formed and symmetrical dual-band plated inverted-F antenna (PIFA) adapted for use in wireless network devices, and a wireless network device with the antenna.[0003]2. Description of the Prior Art[0004]Referring to FIG. 1, which is a perspective view of a typical wireless network device 10. The wireless network device 10 usually includes a main body 11, an internal circuit apparatus 12 located inside the main body 11, a connector portion 13 located at one end of the main body 11 for connecting an external main unit (not shown), and a radio signal receive / transmit portion 14 located at an end of the main body 11 opposing the connector portion 13. Generally, the radio signal receive / transmit portion 14 is provided with an outer casing that is made of a non-metal material. When the wireless network device 10 is connected to the external main unit...

AI Technical Summary

Benefits of technology

"The present invention provides a symmetrical dual-band uni-planar antenna that can be easily fabricated and reduces cost by using a stamping process to integrally and simultaneously form two side antenna portions. The antenna has a symmetrical design that allows for high-frequency and low-frequency bandranges and has an antenna radiation field profile that increases the gain along a vertical direction and reduces dead angle. The antenna can be quickly assembled to a wireless network device and has an improved radiation field profile and higher gain along a perpendicular direction. The wireless network device can achieve better performance with the improved antenna design."

Problems solved by technology

It is obvious that the conventional printed antenna cannot meet the requirement for the vertical stand type wireless network device due to the poor gain along the vertical Z direction.

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